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Finding the Third Proportional to 21,000,986 and 31,502,040

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Solution

The third proportional to 21,000,986 and 31,502,040 is: 47,253,901.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,986 : 31,502,040 = 31,502,040 : x
  2. Step 2: Convert to fraction form
    21,000,986/31,502,040 = 31,502,040/x
  3. Step 3: Cross multiply
    21,000,986x = 31,502,040 × 31,502,040
  4. Step 4: Simplify right side
    21,000,986x = 992,378,524,161,600
  5. Step 5: Solve for x
    x = 992,378,524,161,600/21,000,986
  6. Step 6: Final answer
    x = 47,253,901.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.